The i5 is also a quad-core, while i3 is a dual-core. Our opinions are mentioned in above posts. Sure, you can use AMD to get 4-6-8-core CPU's for a similar price, but reviews show that the Intel destroys them.

In the end, sure, this rig above would play games are medium settings at 1080p, on a budget. Our suggestions for something that's gonna last a bit longer is a i5 quad-core, 8GB RAM, bigger PSU, etc.

And for the same price as the intel i3 3220 ivy bridge should I get this : aMD Black Edition - Amd Fx 6100 - 3.3 Ghz - 6 core - Socket Am3+ knowing since its AMD I might have compatibility problems no?